Communication system, terminal, server and communication method

ABSTRACT

A communication system including a terminal, an electronic device, and a server is provided. The terminal includes a login part logging in to the server, an identifier reception part receiving a device identifier corresponding to a user who has logged in, and a terminal instruction transmission part transmitting to the server the device identifier received by the identifier reception part and an instruction for the electronic device. The server includes an identifier storage part storing a user identifier in association with the device identifier of the electronic device corresponding to the user, an identifier transmission part acquiring device identifier corresponding to the user identifier and transmitting the device identifier to the terminal, a first server instruction reception part receiving the device identifier and the instruction for the electronic device, and a server instruction transmission part transmitting the received instruction to the electronic device corresponding to the received device identifier.

BACKGROUND Technical Field

The disclosure relates to a communication system, a terminal, a server,and a communication method.

Related Art

Patent Document 1 discloses a data utilization system S in which sounddata stored on a server 10 is transmitted to an electronic musicalinstrument 50 via a personal computer (PC) 30 and a recording medium 45,and the transmitted sound data is utilized by the electronic musicalinstrument 50. In the electronic musical instrument 50, since not onlysound data pre-built therein but also the sound data acquired from theserver 10 can be utilized, these sound data enable an expressiveperformance.

Patent Document 1: Japanese Patent Laid-open No. 2021-177219

However, in Patent Document 1, the use of the sound data on the server10 by the electronic musical instrument 50 must be through the recordingmedium 45. On the other hand, in order for the electronic musicalinstrument 50 to receive the sound data from the server 10 bycommunication between the electronic musical instrument 50 and theserver 10, communication-related instructions must be given via an inputdevice of the electronic musical instrument 50 that has loweroperability than a mobile terminal or the like. Accordingly, there is aproblem that significant effort and time are required for a user toutilize the sound data of the server 10 by the electronic musicalinstrument 50.

SUMMARY

The disclosure provides a communication system, a terminal, a server,and a communication method in which data on a server can be easily used.

A communication system of the disclosure is a system including aterminal, an electronic device, and a server. The terminal includes: alogin part, logging in to the server; an identifier reception part,receiving from the server a device identifier being an identifier of theelectronic device corresponding to a user who has logged in by the loginpart; and a terminal instruction transmission part, transmitting to theserver the device identifier received by the identifier reception partand an instruction for the electronic device. The server includes: anidentifier storage part, storing a user identifier being an identifierof the user in association with the device identifier of the electronicdevice corresponding to the user; an identifier transmission part,acquiring from the identifier storage part the device identifiercorresponding to the user identifier of the user of the terminal thathas logged in and transmitting the device identifier to the terminalthat has logged in; a first server instruction reception part, receivingfrom the terminal the device identifier and the instruction for theelectronic device; and a server instruction transmission part,transmitting the instruction received by the first server instructionreception part to the electronic device corresponding to the deviceidentifier received by the first server instruction reception part.

A terminal of the disclosure is configured to be able to communicatewith a server, and includes: a login part, logging in to the server; anidentifier reception part, receiving from the server a device identifierbeing an identifier of an electronic device corresponding to a user whohas logged in by the login part; and a terminal instruction transmissionpart, transmitting to the server the device identifier received by theidentifier reception part and an instruction for the electronic device.

A server of the disclosure is configured to be able to communicate withan electronic device and a terminal, and includes: an identifier storagepart, storing a user identifier being an identifier of a user inassociation with a device identifier being an identifier of theelectronic device corresponding to the user; an identifier transmissionpart, acquiring from the identifier storage part the device identifiercorresponding to the user identifier of the user of the terminal thathas logged in and transmitting the device identifier to the terminalthat has logged in; a first server instruction reception part, receivingfrom the terminal the device identifier and an instruction for theelectronic device; and a server instruction transmission part,transmitting the instruction received by the first server instructionreception part to the electronic device corresponding to the deviceidentifier received by the first server instruction reception part.

A communication method of the disclosure is a method performed by aterminal, an electronic device, and a server. The communication methodincludes the following. A user identifier being an identifier of a useris stored in association with a device identifier being an identifier ofthe electronic device corresponding to the user on the server. Theterminal is logged in to the server. In the server, the deviceidentifier corresponding to the user identifier of the terminal that haslogged in is acquired and transmitted to the terminal that has loggedin. In the terminal, the transmitted device identifier and aninstruction for the electronic device are transmitted to the server. Inthe server, the transmitted instruction is transmitted to the electronicdevice corresponding to the transmitted device identifier.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A illustrates an outline of a communication system, and FIG. 1Billustrates an appearance of a communication device.

FIG. 2 illustrates communication performed by a communication device, anelectronic musical instrument, a mobile terminal and a server in a setupmode.

FIG. 3 illustrates communication performed by a communication device, anelectronic musical instrument, a mobile terminal and a server after thesetup mode.

FIG. 4 is a functional block diagram of a communication system.

FIG. 5 is a block diagram showing an electrical configuration of acommunication device and an electronic musical instrument in acommunication system.

FIG. 6 is a block diagram showing an electrical configuration of amobile terminal and a server in a communication system.

FIG. 7A schematically illustrates a user database (DB), and FIG. 7Bschematically illustrates a device DB.

FIG. 8A is a flowchart of communication device main processing, FIG. 8Bis a flowchart of mobile terminal main processing, and FIG. 8C is aflowchart of server main processing.

FIG. 9 is a flowchart of BT communication part setup processing.

FIG. 10 is a flowchart of Wi-Fi main processing.

FIG. 11 is a flowchart of Wi-Fi communication part setup processing.

FIG. 12 is a flowchart of mobile terminal setup processing.

FIG. 13 is a flowchart of server setup processing.

FIG. 14 is a flowchart of Wi-Fi communication part workflow processing.

FIG. 15 is a flowchart of electronic musical instrument workflowprocessing.

FIG. 16 is a flowchart of mobile terminal workflow processing.

FIG. 17 is a flowchart of HTTPS workflow processing.

FIG. 18 is a flowchart of MQTT workflow processing.

DESCRIPTION OF THE EMBODIMENTS

Hereinafter, embodiments will be described with reference to theaccompanying drawings. An outline of a communication system S of thepresent embodiment is described with reference to FIG. 1A and FIG. 1B.FIG. 1A illustrates the outline of the communication system S, and FIG.1B illustrates an appearance of a communication device 1. As shown inFIG. 1A, the communication system S includes an electronic musicalinstrument 30, a mobile terminal 50, and a server 70. The electronicmusical instrument 30 is connected to an access point (AP) 90 bywireless communication by Wi-Fi®, and is connected to the Internet Nfrom the AP 90. The mobile terminal 50 is connected to a base station100, and is connected to the Internet N from the base station 100. Sincethe server 70 is also connected to the Internet N, the electronicmusical instrument 30 and the server 70 as well as the mobile terminal50 and the server 70 are configured to be mutually communicable via theInternet N. Accordingly, information can be exchanged between theelectronic musical instrument 30 and the mobile terminal 50 via theserver 70. The mobile terminal 50 may include a mobile smart phone (suchas, but not limited to an iPhone™, an Android™ phone, or the like) orother wireless mobile communication devices with suitable processing andencryption capabilities. Typical modern mobile communication devicesinclude network communication electronics, WiFi communicationelectronics, Bluetooth communication electronics, processor electronics,one or more display devices and a keypad and/or other user input device.In further examples, the mobile terminal 50 may include any suitabletype of mobile phone and/or other type of portable electroniccommunication device, such as, but not limited to, an electronic smartpad device (such as, but not limited to an iPad™), a portable computer,or the like. In some examples described herein, the described functionsof the communication device 1, the electronic musical instrument device30, the mobile terminal 50 and the server 70 can be implemented inhardware, software, firmware, or any combination thereof. If implementedin software, the functions can be stored as one or more instructions orcode on a non-transitory computer-readable storage medium ornon-transitory processor-readable storage medium. The steps of a methodor algorithm disclosed herein can be embodied in a processor-executablesoftware module which can reside on a non-transitory computer-readableor processor-readable storage medium. Non-transitory computer-readableor processor-readable storage media can be any storage media that can beaccessed by a computer or a processor. By way of example but notlimitation, such non-transitory computer-readable or processor-readablestorage media can include RAM, ROM, EEPROM, FLASH memory, CD-ROM orother optical disk storage, magnetic disk storage or other magneticstorage devices, or any other medium that can be used to store desiredprogram code in the form of instructions or data structures and that canbe accessed by a computer. Disk and disc, as used herein, includescompact disc (CD), laser disc, optical disc, digital versatile disc(DVD), floppy disk, and blu-ray disc where disks usually reproduce datamagnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofnon-transitory computer-readable and processor-readable media.Additionally, the operations of a method or algorithm can reside as oneor any combination or set of codes and/or instructions on anon-transitory processor-readable storage medium and/orcomputer-readable storage medium, which can be incorporated into acomputer program product.

The electronic musical instrument 30 is a device (electronic device)that produces a musical tone based on a performance of a user H. Theelectronic musical instrument 30 is provided with timbre data havinginformation about timbre, and a timbre according to selection of theuser H is acquired from the timbre data and output as a musical tone.The timbre data may be built in the electronic musical instrument 30 atthe time of factory shipment, and may also be acquired from the server70 via the Internet N. Next, communication by the electronic musicalinstrument 30 like this with an external device such as the server 70 isdescribed.

The communication device 1 is mounted on (connected to) the electronicmusical instrument 30. The communication device 1 is a device thatcommunicates with the external device by Wi-Fi or Bluetooth®, and isdetachably connected to the electronic musical instrument 30 via USB®.The data input from the electronic musical instrument 30 to thecommunication device 1 via USB is transmitted to the external device viaWi-Fi or Bluetooth. On the other hand, the data received by thecommunication device 1 from the external device via Wi-Fi or Bluetoothis input to the electronic musical instrument 30 via USB. As shown inFIG. 1B, the communication device 1 is provided with an operation button2 for inputting an instruction from the user H, and an LED 3. Anoperation state of the communication device 1 is notified to the user Hby a lighting state or blinking state of the LED 3.

The communication device 1 is connected to the AP 90 by communication byWi-Fi, and is connected to the Internet N via the AP 90. Since theserver 70 is connected to the Internet N, the electronic musicalinstrument 30 is able to communicate with the server 70 via thecommunication device 1.

The mobile terminal 50 is a terminal (information processing device,computer) that performs processing according to the instruction inputfrom the user H. The mobile terminal 50 is configured to be able toacquire the timbre data from the server 70 to the electronic musicalinstrument 30 in response to the instruction from the user H, anddetails thereof will be described later. In the mobile terminal 50, thetimbre data stored on the server 70 can be acquired via the Internet Nand be utilized.

The server 70 is an information processing device storing the timbredata or the like utilized by the electronic musical instrument 30 or themobile terminal 50. The server 70 stores, in addition to the timbredata, musical score data or audio data or the like utilized by theelectronic musical instrument 30 or the mobile terminal 50. Hereinafter,data such as the timbre data stored on the server 70 that can beutilized by the electronic musical instrument 30 or the mobile terminal50 is referred to as a “resource”. In the following, timbre data will bemainly described as an example of a resource. However, other types ofresources such as musical score data are also the same, and detaileddescription thereof will be omitted.

When connecting the communication device 1 to the AP 90, it is necessaryto set information about the AP 90 to be connected and a password forconnecting to the AP 90 in the communication device 1. Since thecommunication device 1 and the electronic musical instrument 30 to whichthe communication device 1 is connected are only provided with a displaydevice having the minimum necessary display capability or inputcapability, it is difficult for the user H to input the informationabout the AP 90 and or the password of the AP 90 by the communicationdevice 1 and the electronic musical instrument 30.

In the present embodiment, in the mobile terminal 50, a list of APs 90searched by the communication device 1 is displayed, the user H selectsone AP 90 from the displayed list and inputs the password for connectingto the AP 90. The information about the selected AP 90 and the inputpassword are transmitted to the communication device 1, and thecommunication device 1 performs connection to the AP 90 by using thereceived information about the AP 90 and the received password of the AP90. Accordingly, since there is no need for the user H to input theinformation about the AP 90 or the password of the AP 90 by thecommunication device 1 and the electronic musical instrument 30, timeand effort in connecting the communication device 1 and the electronicmusical instrument 30 to the AP 90 can be reduced.

Next, communication performed by the communication device 1, theelectronic musical instrument 30, the mobile terminal 50 and the server70 is described with reference to FIG. 2 and FIG. 3 . FIG. 2 illustratesthe communication performed by the communication device 1, theelectronic musical instrument 30, the mobile terminal 50 and the server70 in a setup mode. In the communication system S, in the case where aninstruction for a setup mode is given from the user H to thecommunication device 1 via the operation button 2, connection to each ofthe communication device 1, the electronic musical instrument 30, themobile terminal 50 and the server 70 is performed.

Among them, the communication device 1 is provided with a Wi-Ficommunication part 4 that performs communication by Wi-Fi and a BTcommunication part 5 that performs communication by Bluetooth. Themobile terminal 50 is provided with a BT communication part 60 thatperforms communication by Bluetooth and a base communication part 61that communicates with a mobile phone base station 100 (hereinafterabbreviated as “base station 100”).

The setup mode is a mode for the communication device 1 to acquire fromthe mobile terminal 50 the information about the AP 90 (one selected asa connection destination by the user H) to be connected by Wi-Fi inorder to connect the communication device 1 to the AP 90. In the setupmode, reception of the information about the AP 90 from the mobileterminal 50 to the communication device 1 is performed by Bluetooth viathe BT communication part 5. In the setup mode, the communication of theinformation about the AP 90 is not necessarily performed by Bluetoothbut may be performed by other short-range wireless communicationstandards such as ZigBee®.

First, in the case where the communication device 1 is inserted into theelectronic musical instrument 30 and the operation button 2 of thecommunication device 1 is pressed and held (for example, the operationbutton is continuously pressed for 5 seconds), the communication device1 shifts to the setup mode (T1). The user H may be notified that thecommunication device 1 is in the setup mode by blinking the LED 3 atintervals of a predetermined time (for example, 0.5 second) duringexecution of the setup mode.

The instruction for the setup mode is not limited to the case where theoperation button 2 is pressed and held. It is fine to shift to the setupmode in the case where the operation button 2 is pressed a predeterminednumber of times (for example, three times) in succession. The shift tothe setup mode is not necessarily performed by operating the operationbutton 2 of the communication device 1. For example, it is fine to shiftto the setup mode in response to an instruction from the electronicmusical instrument 30 connected to the communication device 1.Alternatively, in the case where the communication device 1 is insertedinto the electronic musical instrument 30 while the information aboutthe AP 90 and the password for connecting to the AP 90 have not been set(stored) in the communication device 1, it is fine to automaticallyshift to the setup mode without waiting for operation of the operationbutton 2.

In order to pair the communication device 1 that has shifted to thesetup mode by the processing of T1 with the mobile terminal 50 byBluetooth, the BT communication part 5 is set to a standby state, thatis, a slave (child) state (T2). On the other hand, in the mobileterminal 50, in the case where the instruction for the setup mode isinput to the mobile terminal 50, the BT communication part 60 is set toa transmission state, that is, a master (parent) state (T3). The mobileterminal 50 that has discovered the communication device 1 in thestandby state by the processing of T3 establishes pairing with thecommunication device 1 (A1).

In the pairing between the communication device 1 and the mobileterminal 50 in the processings of T2 and T3, the communication device 1is set to the standby state and the mobile terminal 50 is set to thetransmission state. However, the disclosure is not limited thereto. Themobile terminal 50 may be set to the standby state and the communicationdevice 1 may be set to the transmission state.

Here, the mobile terminal 50 registers the user H with the server 70 viathe base communication part 61 before the processings of T3 and A1 (A2).In response to such user registration, the server 70 creates a useridentifier being a unique identifier for each user and registers theuser identifier in a user DB 72 b (see FIG. 7A) of the server 70 (T4).After the processing of T4, the mobile terminal 50 logs in to the server70 by the user H (A3). At the time of login, hypertext transfer protocolsecure (HTTPS) access authorization information is transmitted from theserver 70 to the mobile terminal 50, and will be used for subsequentHTTPS protocol communication from the mobile terminal 50 to the server70.

After the pairing by the processing of A1 is established, the mobileterminal 50 requests device registration data from the communicationdevice 1 via the BT communication part 60 (A4). The device registrationdata is composed of a device identifier being an identifier uniquely setfor each communication device 1 and product information indicating aproduct name or the like of the communication device 1. The deviceidentifier of the communication device 1 like this is registered withthe server 70 to be described later. Since the device identifier isuniquely set for each communication device 1, even if the user H ownsmultiple electronic musical instruments 30, by sharing and using oneregistered communication device 1 in the multiple electronic musicalinstruments 30, time and effort to register with the server 70 for eachelectronic musical instrument 30 can be saved.

The device identifier is not limited to an identifier unique to eachcommunication device 1, but may be an identifier that identifies theelectronic musical instrument 30 connected to the communication device1. Accordingly, the electronic musical instrument 30 can be uniquelyidentified even if the communication device 1 connected to theelectronic musical instrument 30 is changed.

In response to the request for device registration data by theprocessing of A4, the communication device 1 transmits the deviceregistration data including its own device identifier and productinformation to the mobile terminal 50 via the BT communication part 5(A5). The mobile terminal 50 that has received the device registrationdata of the communication device 1 by the processing of A5 transmits thedevice registration data to the server 70 via the base communicationpart 61 (A6, A7).

The server 70 registers the device registration data received by theprocessing of A7 in a device DB 72 c (see FIG. 7B) together with theuser identifier corresponding to the user H who has logged in by theabove processing of A3 (T5). Thus, the user identifier of the logged-inuser H and the device registration data of the communication device 1connected to the electronic musical instrument 30 used by the user H arestored in association in the device DB 72 c.

After transmission of the device registration data of the communicationdevice 1 by the above processing of A5, in order to acquire the list ofAPs 90 searched by the communication device 1, the mobile terminal 50requests the list of APs 90 from the communication device 1 via the BTcommunication part 60 (A8). The request for the list of APs 90 receivedby the BT communication part 5 of the communication device 1 by theprocessing of A8 is transmitted to the Wi-Fi communication part 4 (A9).In the Wi-Fi communication part 4 that has received the request for thelist of APs 90 by the processing of A9, the Wi-Fi communication part 4searches for the AP 90 capable of communication, and creates a list ofAPs 90 searched (T6).

The BT communication part 5 acquires the list of APs 90 created by theWi-Fi communication part 4 by the processing of T6 (A10), and transmitsthe list of APs 90 to the mobile terminal 50 via the BT communicationpart 5 (A11). The mobile terminal 50 that has received the list of APs90 by the processing of All displays the list of APs 90 and causes theuser H to select one of the APs 90. Such an AP 90 is specified as one towhich the Wi-Fi communication part 4 of the communication device 1performs connection. Then, the selected (specified) AP 90 and thepassword (input PSW) for connecting to the AP 90 are acquired, and aretransmitted to the communication device 1 via the BT communication part60 (A12).

The communication device 1 that has received the selected AP 90 and theinput PSW thereof by the processing of A12 transmits these informationto the Wi-Fi communication part 4 (A13) and stores these information(T7). After the processing of T7, the Wi-Fi communication part 4connects to the AP 90 in the received information by using the receivedinput PSW (T8).

From this point on, or in the case where the communication system S doesnot shift to the setup mode, the communication device 1 is connected tothe AP 90 using the information stored by the processing of T7.Accordingly, the communication device 1 and the electronic musicalinstrument 30 are connected to the AP 90 via the Wi-Fi communicationpart 4, and are able to communicate with the server 70 via the AP 90 andthe Internet N.

In the BT communication part 5 of the communication device 1 and the BTcommunication part 60 of the mobile terminal 50, in the case where thetransmission by the processing of A12 is completed, the communication byBluetooth is disconnected and the pairing is canceled (T9, T10). In thepresent embodiment, the device registration data is first registeredwith the server 70 by the processings of A4 to A7, and after that, theinformation about the AP 90 or the like is transmitted from the mobileterminal 50 to the communication device 1 by the processings of A8 toA13, T6, and T7. However, the disclosure is not limited thereto. Theprocessings of A8 to A13, T6, and T7 may be performed first, followed bythe processings of A4 to A7, or the processings of A4 to A7 may beperformed in parallel with the processings of A8 to A13, T6, and T7.

As described above, in the setup mode, the information about the AP 90connected by the Wi-Fi communication part 4 of the communication device1 is transmitted from the mobile terminal 50 by communication byBluetooth. Accordingly, the AP 90 can be connected without inputting theinformation about the AP 90, that is, the target AP 90 and the input PSWthereof, by the communication device 1 and the electronic musicalinstrument 30 that are more restricted in input device as compared withthe mobile terminal 50. Accordingly, the time and effort to be spent bythe user H when connecting the communication device 1 and the electronicmusical instrument 30 to the AP 90 can be reduced, and communicationbetween the communication device 1 and the server 70 and between theelectronic musical instrument 30 and the server 70 can be easilyestablished.

Here, when the AP information is to be transmitted by Bluetoothcommunication, it is necessary to pair the BT communication part 5 ofthe communication device 1 with the BT communication part 60 of themobile terminal 50. However, in such pairing, there is no need for theuser H to input authentication information or the like. Thus, the timeand effort to be spent by the user H when connecting the communicationdevice 1 and the electronic musical instrument 30 to the AP 90 can bereduced.

When the pairing between the BT communication part 5 of thecommunication device 1 and the BT communication part 60 of the mobileterminal 50 is established, the device registration data of thecommunication device 1 is transmitted to the server 70 via the mobileterminal 50, and is registered in the device DB 72 c together with theuser identifier of the user H who has logged in to the server 70 fromthe mobile terminal 50. Accordingly, the device registration data of thecommunication device 1 can be reliably registered with the server 70 inassociation with the user identifier of the user H.

Based on the device registration data and the user identifier registeredwith the server 70 in this way, after the setup mode, a resource storedon the server 70 can be accessed from the electronic musical instrument30. Further, when the pairing between the BT communication part 5 of thecommunication device 1 and the BT communication part 60 of the mobileterminal 50 is established, since the device registration data of thecommunication device 1 is automatically transmitted to the server 70,the time and effort to be spent by the user H when registering thedevice registration data with the server 70 can be reduced.

Next, communication performed by the communication device 1, theelectronic musical instrument 30, the mobile terminal 50 and the server70 after the communication device 1 is connected to the AP 90 by thesetup mode of FIG. 2 is described. FIG. 3 illustrates the communicationperformed by the communication device 1, the electronic musicalinstrument 30, the mobile terminal 50 and the server 70 after the setupmode.

In the communication system S, after the setup mode, a resource storedon the server 70 is received by the communication device 1, and thereceived resource is utilized by the electronic musical instrument 30.Specifically, first, the device identifier of the communication device 1is transmitted from the communication device 1 to the server 70 via theWi-Fi communication part 4 (A20). In the processing of A20, thetransmission of the device identifier from the communication device 1 tothe server 70 is performed by communication using a message queuingtelemetry transport (MQTT) protocol. The communication of thecommunication device 1 with the server 70 in and after A20 is performedvia the Wi-Fi communication part 4.

The server 70 that has received the device identifier by the processingof A20 acquires the user identifier corresponding to the deviceidentifier from the device DB 72 c (see FIG. 7B), and creates the HTTPSaccess authorization information based on the user identifier (T20). TheHTTPS access authorization information is information for authorizing toaccess a resource of the user H when the communication device 1communicates with the server 70 by HTTPS.

The HTTPS access authorization information created by the processing ofT20 and the user identifier corresponding to the device identifiertransmitted by the processing of A20 are transmitted to thecommunication device 1 by communication using an MQTT protocol (A21).The user identifier received by the processing of A21 will be used forsubsequent communication between the communication device 1 and theserver 70 using an MQTT protocol. The user identifier and the HTTPSaccess authorization information received together with the useridentifier will be used for subsequent communication between thecommunication device 1 and the server 70 using an HTTPS protocol.

After the processing of A21, a request for accessing the resource of theuser H is transmitted from the communication device 1 to the server 70in response to an instruction from the electronic musical instrument 30(A22). The transmission of the request in the processing of A22 isperformed by communication using an HTTPS protocol, and at that time,the request is transmitted including the user identifier and the HTTPSaccess authorization information received by the processing of A21.

In the case where the server 70, upon receiving the request by theprocessing of A22, determines that the HTTPS access authorizationinformation is valid for the requested resource, the server 70 transmitsthe resource to the communication device 1 that made the request by theprocessing of A22 (A23). The transmission from the server 70 to thecommunication device 1 by the processing of A23 is also performed bycommunication using an HTTPS protocol, like the processing of A22. Theresource transmitted by the processing of A23 is transmitted from thecommunication device 1 to the electronic musical instrument 30, and isutilized by the electronic musical instrument 30. In the processing ofA22, in order to confirm (verify) whether the requested resource belongsto the user H, the user identifier included in the received request maybe confirmed, or both the HTTPS access authorization information and theuser identifier may be confirmed.

As described above, after the setup mode, the communication device 1transmits its own device identifier to the server 70, and the useridentifier corresponding to the device identifier and the HTTPS accessauthorization information created based on the user identifier aretransmitted from the server 70 to the communication device 1. Thecommunication device 1 acquires the resource from the server 70 by usingthe received HTTPS access authorization information or user identifier,and the resource acquired by the communication device 1 is utilized bythe electronic musical instrument 30. That is, when the resource on theserver 70 is to be acquired in the electronic musical instrument 30, theresource can be directly acquired from the server 70 without via anotherrecording medium or the like. Accordingly, the resource on the server 70can be easily acquired and utilized on the electronic musical instrument30.

Further, the communication device 1 receives the HTTPS accessauthorization information created based on the user identifier of theuser H of the connected electronic musical instrument 30 or the useridentifier, and acquires the resource of the user H from the server 70by using these information. That is, since the resource of the user Hcorresponding to the communication device 1 is acquired by theelectronic musical instrument 30 of the user H, it can be prevented thata resource of another user H is accessed by the electronic musicalinstrument 30 of the user H.

The transmission of the device identifier from the communication device1 by the processing of A20 and the transmission of the user identifierand the HTTPS access authorization information from server 70 by theprocessing of A21 are performed by communication using an MQTT protocol.Since communication using an MQTT protocol is lighter than communicationusing an HTTPS protocol, the transmission of the device identifier andthe transmission of the user identifier and the HTTPS accessauthorization information by the processings of A20 and A21 can bequickly performed.

Further, the acquisition of the HTTPS access authorization informationand the user identifier from the server 70 by the communication device 1is performed every time immediately after the communication between thecommunication device 1 and the server 70 is established, whether thesetup mode has been executed or not. Accordingly, since the HTTPS accessauthorization information in particular will be the latest whencommunication with the server 70 is established, it can be preventedthat the same HTTPS access authorization information is used for a longperiod of time.

For example, by regularly updating the format of the HTTPS accessauthorization information transmitted by the server 70 to thecommunication device 1, even if the HTTPS access authorizationinformation or the request by the processing of A22 based on the HTTPSaccess authorization information is leaked, after the HTTPS accessauthorization information is updated, no more resources can be acquiredfrom the server 70 by the leaked HTTPS access authorization information.Thus, leakage of the resource on the server 70 can be relativelyeffectively prevented.

The communication of A20 and A21 is not limited to communication usingan MQTT protocol, and may be other communication methods such ascommunication using an HTTPS protocol. Also, the communication of A22and A23 is not limited to communication using an HTTPS protocol, and maybe other communication methods such as communication using an MQTTprotocol.

In addition to utilization of the resource on the server 70 by theelectronic musical instrument 30 in response to an instruction of theuser H given to the electronic musical instrument 30 in this way, theresource on the server 70 can be utilized by the electronic musicalinstrument 30 in response to an instruction of the user H given to themobile terminal 50. Such utilization of the resource on the server 70 bythe electronic musical instrument 30 in response to the instruction tothe mobile terminal 50 is described.

After the setup mode described with reference to FIG. 2 , the mobileterminal 50 logs in to the server 70 via the base communication part 61(A24). At the time of login, a HTTPS access authorization information istransmitted from the server 70 to the mobile terminal 50, and will beused for subsequent HTTPS protocol communication from the mobileterminal 50 to the server 70. The login by the processing of A24 may beomitted in the case where the login by the processing of A3 of FIG. 2described above continues (that is, in the case where no logout hasoccurred). Subsequent communication of the mobile terminal 50 with theserver 70 will be performed via the base communication part 61.

After the processing of A24, the user identifier of the logged-in user His requested (A25), the server 70 searches the user DB 72 b for therequested user identifier (T21), and the searched user identifier istransmitted to the mobile terminal 50 that made the request for the useridentifier (A26). The mobile terminal 50 requests from the server 70 thedevice registration data corresponding to the user identifier receivedby the processing of A26 (A27).

The server 70 searches the device DB 72 c for the device registrationdata corresponding to the user identifier requested by the processing ofA27 (T22), and transmits the found device registration data to themobile terminal 50 that made the request (A28).

The mobile terminal 50 registers the device registration data receivedby the processing of A28 in an owned device list (T24). In the casewhere multiple pieces of device registration data are registered in theowned device list by the processing of T24, such as where there the userH has multiple electronic musical instruments 30, the user H is causedto select the device registration data corresponding to thecommunication device 1 of the electronic musical instrument 30 thatutilizes the resource on the server 70 according to the instruction tothe mobile terminal 50.

After the processing of T24, the mobile terminal 50 operates as a userinterface (UI) of the electronic musical instrument 30 to which thecommunication device 1 corresponding to the selected device registrationdata is connected (T25). An instruction given to the electronic musicalinstrument 30 or the server 70 and accompanying information, and arequest based on the user identifier received by the processing of A26and the device identifier of the selected device registration data aretransmitted from the mobile terminal 50 to the server 70 (A29).

The server 70 transmits the request by the processing of A29 to thecommunication device 1, the communication device 1 transmits the requestreceived from the server 70 to the electronic musical instrument 30, andprocessing corresponding to the request is executed in the electronicmusical instrument 30 (A30). In the processing of A30, the server 70 mayperform necessary processing in response to the request transmitted fromthe mobile terminal 50, and transmit a result thereof to thecommunication device 1.

As a specific example of the processings of A29 and A30, a request(including a target parameter name and a set value after change) forinstructing that a change be made in the parameter of the electronicmusical instrument 30 is transmitted from the mobile terminal 50 to theserver 70 (A29). The server 70 transmits the received request to thecommunication device 1. The communication device 1 transmits the requesttransmitted from the server 70 to the electronic musical instrument 30.The electronic musical instrument 30 performs processing (parametersetting) according to the received request (A30). Other requeststransmitted by the processing of A29 include transmission of a parametervalue of the electronic musical instrument 30 to the mobile terminal 50.

As another specific example of the processings of A29 and A30, theserver 70 may perform necessary processing in response to the requesttransmitted from the mobile terminal 50, and transmit a result thereofto the communication device 1. In this case, a request (includinginformation for specifying resources) for instructing that a list ofpredetermined resources stored on the server 70 be displayed istransmitted from the mobile terminal 50 to the server (A29). In responseto the request, the server 70 creates a list of applicable resources andtransmits a request (including the created list) instructing that thelist be displayed to the communication device 1. The communicationdevice 1 transmits the received request to the electronic musicalinstrument 30, and the electronic musical instrument 30 displays thelist on an LCD 36 (see FIG. 5 ) to be described later (A30).

As yet another specific example of the processings of A29 and A30, theelectronic musical instrument 30 may transmit a request to the server 70in response to the request transmitted from the communication device 1,and acquire a result of processing of the request in the server 70. Inthis case, a request (including information for specifying a resource)for instructing that a resource utilized by the electronic musicalinstrument 30 be acquired from the server 70 is transmitted from themobile terminal 50 to the server 70 (A29).

The server 70 transmits the received request to the communication device1, and the communication device 1 transmits the transmitted instructionto the electronic musical instrument 30. Based on the receivedinstruction, the electronic musical instrument 30 transmits a request tothe communication device 1 instructing that the specified resource betransmitted to the electronic musical instrument 30. The communicationdevice 1 transmits the request to the server 70. The server 70 transmitsthe resource specified by the received request to the communicationdevice 1. The communication device 1 transmits the received resource tothe electronic musical instrument 30. The electronic musical instrument30 utilizes the resource transmitted from the communication device 1(A30).

As described above, the instruction (request) from the mobile terminal50 is transmitted from the server 70 to the communication device 1 andthe electronic musical instrument 30. The mobile terminal 50 is equippedwith a display device having more abundant functions than thecommunication device 1 and the electronic musical instrument 30. Theuser H inputs to the mobile terminal 50 like this an instruction tocause the electronic musical instrument 30 to utilize the resource onthe server 70, and the instruction is transmitted to the electronicmusical instrument 30 via the server 70. Thereby, the user H is able toeasily realize utilization of the resource on the server 70 by theelectronic musical instrument 30 without operating the electronicmusical instrument 30. Accordingly, usability for the user H concerningresource utilization by the electronic musical instrument 30 can beimproved.

In the processings of A24 to A28, after the mobile terminal 50 logs into the server 70, the user identifier is requested to the server 70, therequested user identifier is transmitted to the mobile terminal 50, andthe mobile terminal 50 transmits the transmitted user identifier to theserver 70, thereby acquiring the corresponding device registration datafrom the server 70. However, the disclosure is not limited thereto. Whenthe mobile terminal 50 logs in to the server 70, the user DB 72 b may besearched for the user identifier of the logged-in user H, the device DB72 c may be searched for the device registration data corresponding tothe searched user identifier, and the searched device registration datamay be transmitted to the mobile terminal 50 together with the useridentifier. In this case, the processings of A25 and A27 by the mobileterminal 50 and the processing of A26 by the server 70 may be omitted.

Next, a function of the communication system S is described withreference to FIG. 4 . FIG. 4 is a functional block diagram of thecommunication system S. As shown in FIG. 4 , the communication system Sincludes the mobile terminal 50, the electronic musical instrument 30,and the server 70. The mobile terminal 50 includes a login part 300, anidentifier reception part 301, and a terminal instruction transmissionpart 302.

The login part 300 is a means of logging in to the server 70, and isrealized by a CPU 51 to be described later in FIG. 6 . The identifierreception part 301 is a means of receiving from the server 70 a deviceidentifier being an identifier of the electronic musical instrument 30corresponding to a user who has logged in by the login part 300, and isrealized by the CPU 51. The terminal instruction transmission part 302is a means of transmitting to the server 70 the device identifierreceived by the identifier reception part 301 and an instruction for theelectronic musical instrument 30, and is realized by the CPU 51.

The server 70 includes an identifier storage part 400, an identifiertransmission part 401, a first server instruction reception part 402,and a server instruction transmission part 403. The identifier storagepart 400 is a means of storing a user identifier being an identifier ofa user in association with the device identifier of the electronicmusical instrument 30 corresponding to the user, and is realized by ahard disk drive 72 (hereinafter abbreviated as “HDD 72”) to be describedlater in FIG. 6 . The identifier transmission part 401 is a means ofacquiring from the identifier storage part 400 the device identifiercorresponding to the user identifier of the logged-in mobile terminal 50and transmitting the same to the logged-in mobile terminal 50, and isrealized by a CPU 71 to be described later in FIG. 6 . The first serverinstruction reception part 402 is a means of receiving from the mobileterminal 50 the device identifier and the instruction for the electronicmusical instrument 30, and is realized by the CPU 71. The serverinstruction transmission part 403 is a means of transmitting theinstruction received by the first server instruction reception part 402to the electronic musical instrument 30 corresponding to the deviceidentifier received by the first server instruction reception part 402,and is realized by the CPU 71.

That is, in the communication system S, the mobile terminal 50 logs into the server 70 and receives from the server 70 the device identifiercorresponding to the user who has logged in. Then, the mobile terminal50 transmits to the server 70 the received device identifier and theinstruction for the electronic musical instrument 30. The server 70transmits the instruction received from the mobile terminal 50 to theelectronic musical instrument 30 corresponding to the device identifiersimilarly received from the mobile terminal 50. Accordingly, by the useroperating the mobile terminal 50, execution of an instruction from theserver 70 by the electronic musical instrument 30 or utilization of thedata from the server 70 by the electronic musical instrument 30 can befacilitated without operating the electronic musical instrument 30 whosedisplay device and input device are inferior as compared with the mobileterminal 50.

Next, an electrical configuration of the communication system S isdescribed with reference to FIG. 5 to FIG. 7B. First, an electricalconfiguration of the communication device 1 and the electronic musicalinstrument 30 is described with reference to FIG. 5 . FIG. 5 is a blockdiagram showing an electrical configuration of the communication device1 and the electronic musical instrument 30 in the communication systemS. The communication device 1 includes the CPU 10, a flash ROM 11, and aRAM 12 each of which is connected to an I/O port 14 via a bus line 13.The operation button 2, the LED 3, the Wi-Fi communication part 4 andthe BT communication part 5 described above and an external IF 15 arefurther connected to the I/O port 14.

The CPU 10 is an arithmetic unit that controls each part connected bythe bus line 13. The flash ROM 11 is a rewritable non-volatile storagedevice storing programs executed by the CPU 10 or fixed value data orthe like, and includes a control program 11 a, a device identifier 11 bin which the device identifier of the communication device 1 is stored,product information 11 c in which product information of thecommunication device 1 is stored, AP information 11 d in which theinformation about the selected AP 90 acquired from the mobile terminal50 is stored, and an AP password 11 e in which the input PSW of theselected AP 90 is stored. When the control program 11 a is executed bythe CPU 10, communication device main processing of FIG. 8A is executed.The RAM 12 is a memory for rewritably storing various work data or flagsor the like when the CPU 10 executes a program.

The external IF 15 is a device for connecting to an external device, andis connected to an external IF 37 of the electronic musical instrument30 to be described later. In the present embodiment, the external IF 15is composed of a device based on USB standards. However, the external IF15 may be a device based on a communication standard other than USB.Communication between the communication device 1 and the electronicmusical instrument 30 is performed via the external IF 15 and theexternal IF 37.

The Wi-Fi communication part 4 and the BT communication part 5 areconnected to a duplexer 16. The duplexer 16 is a device that integratesradio waves transmitted and received by the Wi-Fi communication part 4with radio waves transmitted and received by the BT communication part5. An antenna 17 is connected to the duplexer 16. The radio wavestransmitted by the Wi-Fi communication part 4 and the radio wavestransmitted by the BT communication part 5 are integrated andtransmitted from the antenna 17. The radio waves received by the antenna17 are appropriately distributed to the Wi-Fi communication part 4 andthe BT communication part 5. By connecting the Wi-Fi communication part4 and the BT communication part 5 to the duplexer 16, transmission andreception of the radio waves of these two communication parts can berealized by one antenna 17. The duplexer 16 may be omitted, and anantenna may be provided in each of the Wi-Fi communication part 4 andthe BT communication part 5.

Next, an electrical configuration of the electronic musical instrument30 is described. The electronic musical instrument 30 includes a CPU 31,a flash ROM 32, a RAM 33, a keyboard 34 acquiring performanceinformation according to a performance of the user H, a setting key 35for the user H to input various settings, the LCD 36 displaying asetting state of the electronic musical instrument 30 or the like, theexternal IF 37, a sound source 38, and a digital signal processor 39(hereinafter referred to as “DSP 39”) each of which is connected via abus line 40.

The CPU 31 is an arithmetic unit that controls each part connected bythe bus line 40. The flash ROM 32 is a rewritable non-volatile storagedevice storing programs executed by the CPU 31 or fixed value data orthe like, and includes a control program 32 a, and timbre data 32 b inwhich the timbre data among the resources acquired from the server 70 isstored. When the control program 32 a is executed by the CPU 31,electronic musical instrument workflow processing of FIG. 15 isexecuted. The RAM 33 is a memory for rewritably storing various workdata or flags or the like when the CPU 31 executes a program.

The external IF 37 is a device for connecting to an external device, andis connected to the external IF 15 of the communication device 1described above. In the present embodiment, like the external IF 15, theexternal IF 37 is composed of a device based on USB standards. However,the external IF 37 may be a device based on a communication standardother than USB if having the same communication standard as the externalIF 15.

The sound source 38 is a device that outputs waveform data based on thetimbre data 32 b according to the performance information input from thekeyboard 34. The DSP 39 is an arithmetic unit for arithmeticallyprocessing the waveform data input from the sound source 38. The soundsource 38 and a digital-to-analog converter (DAC) 41 are connected tothe DSP 39, an amplifier 42 is connected to the DAC 41, and a speaker 43is connected to the amplifier 42.

Next, an electrical configuration of the mobile terminal 50 and theserver 70 in the communication system S is described with reference toFIG. 6 , FIG. 7A and FIG. 7B. FIG. 6 is a block diagram showing anelectrical configuration of the mobile terminal 50 and the server 70 inthe communication system S.

The mobile terminal 50 includes a CPU 51, a flash ROM 52, and a RAM 53each of which is connected to an I/O port 55 via a bus line 54. The BTcommunication part 60 and the base communication part 61 describedabove, an LCD 56 displaying a setting state of the mobile terminal 50 orthe like, and a touch panel 57 to which an instruction from the user His input are further connected to the I/O port 55.

The CPU 51 is an arithmetic unit that controls each part connected bythe bus line 54. The flash ROM 52 is a rewritable non-volatile storagedevice storing programs executed by the CPU 51 or fixed value data orthe like, in which a mobile control program 52 a is stored. When themobile control program 52 a is executed by the CPU 51, mobile terminalmain processing of FIG. 8B is executed. The RAM 53 is a memory forrewritably storing various work data or flags or the like when the CPU51 executes a program.

The server 70 includes the CPU 71, the HDD 72, and a RAM 73 each ofwhich is connected to an I/O port 75 via a bus line 74. A communicationpart 76 that communicates with the Internet N is further connected tothe I/O port 75.

The CPU 71 is an arithmetic unit that controls each part connected bythe bus line 74. The HDD 72 is a rewritable non-volatile storage devicestoring programs executed by the CPU 71 or fixed value data or the like,and includes a server control program 72 a, the user DB 72 b, the deviceDB 72 c, and a timbre data group 72 d in which multiple pieces of timbredata to be utilized by the electronic musical instrument 30 are stored.When the server control program 72 a is executed by the CPU 71, servermain processing of FIG. 8C is executed.

The user DB 72 b stores login-related information and the useridentifier of the user H who has been registered. The device DB 72 cstores the device identifier and the product information of thecommunication device 1 as well as the user identifier of the user H whoutilizes the communication device 1 (electronic musical instrument 30).The user DB 72 b and the device DB 72 c are described with reference toFIG. 7A and FIG. 7B.

FIG. 7A schematically illustrates the user DB 72 b. As shown in FIG. 7A,the user DB 72 b stores account (e-mail address) and password being thelogin-related information of the user H who has been registered inassociation with the user identifier created when the user H isregistered. The account stored in the user DB 72 b is not limited to ane-mail address, but may be a name of the user H or a uniquely setarbitrary character string.

FIG. 7B schematically illustrates the device DB 72 c. As shown in FIG.7B, the device DB 72 c stores the device identifier and productinformation of the communication device 1 that has been registered inassociation with the user identifier of the user H who utilizes thecommunication device 1 (electronic musical instrument 30). Among them,the device identifier is registered in the device DB 72 c at the time offactory shipment of the communication device 1, and the productinformation and the user identifier are registered in the device DB 72 cin the setup mode described above.

Please refer back to FIG. 6 . The server 70 performs two types ofcommunication, namely, the communication using an HTTPS protocol and thecommunication using an MQTT protocol, with the communication device 1and the mobile terminal 50. Among them, in the communication using anMQTT protocol, the communication with the communication device 1 and themobile terminal 50 is performed by exchanging a “topic” being acharacter string including a user identifier and a device identifier ofa target to and from which data is to be transmitted and received.Examples of the “topic” include “topic/{user identifier}/{deviceidentifier}/#(#: any command such as data request)”.

A “subscribe” function is provided for the communication using an MQTTprotocol. In the “subscribe” function, by registering (hereinafterreferred to as “subscription registration”) the user identifier anddevice identifier for each communication device 1 and mobile terminal 50with the server 70 in advance, when a topic is transmitted to the server70, the server 70 transmits the topic to the communication device 1 andthe mobile terminal 50 among the communication device 1 and the mobileterminal 50 that correspond to the user identifier and the deviceidentifier of the topic.

Accordingly, in the subscription registration of each of thecommunication device 1 (electronic musical instrument 30) and the mobileterminal 50 used by the user H with respect to the server 70, byregistering the device identifier of the communication device 1 and theuser identifier of the user H, a result obtained by transmitting thetopic from the communication device 1 to the server 70 is transmitted tothe communication device 1 and also to the mobile terminal 50, and aresult obtained by transmitting the topic from the mobile terminal 50 tothe server 70 is transmitted to the mobile terminal 50 and also to thecommunication device 1. By doing so, the communication device 1 and themobile terminal 50 become able to exchange necessary information via theserver 70.

In the subscription registration of the communication device 1, acharacter string indicating “for the communication device 1” may beregistered in addition to the user identifier and the device identifier.In the subscription registration of the mobile terminal 50, a characterstring indicating “for the mobile terminal 50” may be registered inaddition to the user identifier and so on. If registration is performedwithout addition of these character strings, in the case where a certaintopic is processed by the server 70, although a processing result istransmitted as well, the topic transmitted by each of the communicationdevice 1 and the mobile terminal 50 may also be transmitted (returned)to each of them. Even if a processing result according to the topic onlyneeds to be transmitted to one of the communication device 1 and themobile terminal 50, the processing result may be transmitted to both ofthem. In order to avoid this, in the subscription registration of thecommunication device 1, the character string indicating “for thecommunication device 1” is registered in addition to the user identifierand so on. In the subscription registration of the mobile terminal 50,the character string indicating “for the mobile terminal 50” isregistered in addition to the user identifier and so on.

Then, the communication device 1 and the mobile terminal 50 transmit atopic including the character string indicating “for the communicationdevice 1” to the communication device 1 and transmit a topic includingthe character string indicating “for the mobile terminal 50” to themobile terminal 50. Further, the server 70 transmits a topic includingthe character string “for the communication device 1” to a processingresult for the topic including the character string indicating “for thecommunication device 1”, and transmits a topic including the characterstring “for the mobile terminal 50” to a processing result for the topicincluding the character string indicating “for the mobile terminal 50”.By doing so, the communication device 1 and the mobile terminal 50 areable to receive only a topic directed to themselves and a processingresult according to the topic.

Next, processing executed by the CPU 10 of the communication device 1,the CPU 51 of the mobile terminal 50, the CPU 71 of the server 70, andthe CPU 31 of the electronic musical instrument 30 is described withreference to FIG. 8A to FIG. 19 . First, main processing of thecommunication device 1, the mobile terminal 50 and the server 70 isdescribed with reference to FIG. 8A to FIG. 8C. FIG. 8A is a flowchartof the communication device main processing, FIG. 8B is a flowchart ofthe mobile terminal main processing, and FIG. 8C is a flowchart of theserver main processing.

The communication device main processing is processing executed in thecase where power of the communication device 1 is turned on. As shown inFIG. 8A, in the communication device main processing, first, it isconfirmed whether an instruction for the setup mode has been given by along pressing operation on the operation button 2 (S1). In theprocessing of S1, if there is an instruction for the setup mode (S1:Yes), BT communication part setup processing (S2) is executed; if thereis no instruction for the setup mode (S1: No), the BT communication partsetup processing (S2) is skipped. Wi-Fi main processing (S3) is executedin parallel with the processings of S1 and S2. In the BT communicationpart setup processing, the processing concerning the BT communicationpart 5 in the setup mode is performed, and details thereof will bedescribed later in FIG. 9 .

In the Wi-Fi main processing, processing (specifically, Wi-Fi setupprocessing to be described later in FIG. 10 ) concerning the Wi-Ficommunication part 4 in the setup mode and processing (specifically,Wi-Fi communication part workflow processing to be described later inFIG. 14 ) concerning the Wi-Fi communication part 4 after the setup modeare performed. Details thereof will be described later.

After the processings of S1 to S3, other processing (S4) concerning thecommunication device 1 is executed, and after that, the processings ofS1 to S3 onwards are repeated. The processings of S1 and S2 and theprocessing of S3 are not necessarily executed in parallel. Theprocessing of S3 may be executed after the processings of S1 and S2, orthe processings of S1 and S2 may be executed after the processing of S3.

The mobile terminal main processing is processing executed in the casewhere an application program for the communication system S is launchedon the mobile terminal 50. As shown in FIG. 8B, in the mobile terminalmain processing, first, it is confirmed whether there is an instructionfor the setup mode via the touch panel 57 (S10). In the processing ofS10, if there is an instruction for the setup mode (S10: Yes), mobileterminal setup processing (S11) is executed; if there is no instructionfor the setup mode (S10: No), mobile terminal workflow processing (S12)is executed.

The mobile terminal setup processing of S11 is processing in the setupmode of the mobile terminal 50, and details thereof will be describedlater in FIG. 12 . The mobile terminal workflow processing of S12 isprocessing of the mobile terminal 50 after the setup mode, and detailsthereof will be described later in FIG. 16 . After the processings ofS11 and S12, other processing (S13) concerning the mobile terminal 50 isexecuted, and after that, the processing of S10 onwards is repeated.

The server main processing is processing executed in the case wherepower of the server 70 is turned on. As shown in FIG. 8C, in the servermain processing, first, server setup processing (S20), HTTPS workflowprocessing (S21) and MQTT workflow processing (S22) are executed inparallel.

The server setup processing of S20 is processing in the setup mode ofthe server 70, and details thereof will be described later in FIG. 13 .The HTTPS workflow processing of S21 is processing concerning HTTPSprotocol communication of the server 70 after the setup mode, anddetails thereof will be described later in FIG. 17 . The MQTT workflowprocessing of S22 is processing concerning MQTT protocol communicationof the server 70 after the setup mode, and details thereof will bedescribed later in FIG. 18 . After the processings of S20 to S22, otherprocessing (S23) concerning the server 70 is executed, and after that,the processings of S20 to S22 onwards are repeated.

The three processings of S20 to S22 are not necessarily executed inparallel. For example, the processing of S20, the processing of S21 andthe processing of S22 may be executed one by one in this order. Two ofthe processings of S20 to S22 may be executed in parallel, followed bythe remaining processing, in such a way that the processing of S20 andthe processing of S21 are executed in parallel, followed by theprocessing of S22. Or, one of the processings of S20 to S22 may beexecuted, followed by the remaining processings in parallel, in such away that the processing of S21 and the processing of S22 are executed inparallel after the processing of S20.

First, processing of the setup mode of the communication device 1 isdescribed. FIG. 9 is a flowchart of the BT communication part setupprocessing (S2). In the BT communication part setup processing, first,the BT communication part 5 is set to a standby state (S30). After theprocessing of S30, it is confirmed whether pairing with the mobileterminal 50 has been established (S31). In the processing of S31, if thepairing has not been established (S31: No), the processing of S30onwards is repeated.

In the processing of S31, if the pairing with the mobile terminal 50 hasbeen established (S31: Yes), it is confirmed whether a request for thedevice registration data from the mobile terminal 50 has been receivedby the BT communication part 5 (S32). In the processing of S32, if therequest for the device registration data has been received (S32: Yes),the device registration data of the communication device 1, that is, thedevice identifier of the device identifier 11 b and the productinformation of the product information 11 c, are transmitted to themobile terminal 50 by the BT communication part 5 (S33). After theprocessing of S33, the processing of S32 onwards is repeated.

In the processing of S32, if no request for the device registration datahas been received (S32: No), it is confirmed whether a request for thelist of APs 90 has been received from the mobile terminal 50 by the BTcommunication part 5 (S34). In the processing of S34, if the request forthe list of APs 90 has been received (S34: Yes), standby is performeduntil the list of APs 90 is created by the processing of S51 of theWi-Fi communication part setup processing (see FIG. 11 ) to be describedlater (S35). After the processing of S35, the created list of APs 90 istransmitted to the mobile terminal 50 from the BT communication part 5(S36). After the processing of S36, the processing of S32 onwards isrepeated.

In the processing of S34, if no request for the list of APs 90 has beenreceived (S34: No), it is confirmed whether the information (APinformation) about the AP 90 selected by the user H and the input PSW(AP password) of the AP 90 have been received from the mobile terminal50 (S37). In the processing of S37, if the information about the AP 90and the input PSW have been received (S37: Yes), the receivedinformation about the AP 90 and the received input PSW are acquired(S38).

The information about the AP 90 and the input PSW acquired by theprocessing of S38 are respectively stored in the AP information 11 d andthe AP password 11 e. For the connection to the AP 90 after the setupmode, the information about the AP 90 and the input PSW stored in the APinformation 11 d and the AP password 11 e are used.

In the processing of S37, if the information about the AP 90 and theinput PSW have not been received (S37: No), the processing of S32onwards is repeated. After the processing of S38, the BT communicationpart setup processing is ended. The end of the BT communication partsetup processing after the processing of S38 may be on standby until theconnection of the Wi-Fi communication part 4 to the AP 90 succeeds inthe processings of S54 and S55 to be described later.

After the processing of S38, the communication device 1 may notify theelectronic musical instrument 30 that the information about the AP 90and the input PSW have been acquired. Upon receiving the notification,the electronic musical instrument 30 may restart the communicationdevice 1. The restarted communication device 1 may connect to the AP 90based on the information about the AP 90 and the input PSW stored in theAP information 11 d and the AP password 11 e, and may execute theprocessing after the setup mode.

FIG. 10 is a flowchart of the Wi-Fi main processing (S3). In the Wi-Fimain processing, first, it is confirmed whether the operation button 2of the communication device 1 has been pressed and held and there is aninstruction for the setup mode (S40). In the processing of S40, if thereis an instruction for the setup mode (S40: Yes), the Wi-Fi communicationpart setup processing (S41) is executed. Here, the Wi-Fi communicationpart setup processing is described with reference to FIG. 11 .

FIG. 11 is a flowchart of the Wi-Fi communication part setup processing(S41). In the Wi-Fi communication part setup processing, first, it isconfirmed whether the request for the list of APs 90 has been receivedfrom the mobile terminal 50 by the BT communication part 5 (S50). In theprocessing of S50, if the request for the list of APs 90 has beenreceived (S50: Yes), a search is performed for the AP 90 that can beconnected by the Wi-Fi communication part 4 and a list of the searchedAPs 90 is created (S51). After the processing of S51, the processing ofS50 onwards is repeated.

In the processing of S50, if no request for the list of APs 90 has beenreceived (S50: No), it is confirmed whether the information (APinformation) about the AP 90 selected by the user H and the input PSW(AP password) of the AP 90 have been received from the mobile terminal50 by the BT communication part 5 (S52). In the processing of S52, ifthe information about the AP 90 and the input PSW have been received(S52: Yes), the AP 90 corresponding to the received information aboutthe AP 90 is connected by the Wi-Fi communication part 4 by using thereceived input PSW (S53). In the processing of S52, if the informationabout the AP 90 and the input PSW have not been received (S52: No), theprocessing of S50 onwards is repeated.

After the processing of S53, it is confirmed whether the connection tothe AP 90 by the Wi-Fi communication part 4 has succeeded (S54). In theprocessing of S54, if the connection to the AP 90 has succeeded (S54:Yes), the fact (“connection successful”) that the connection hassucceeded is transmitted from the BT communication part 5 to the mobileterminal 50 (S55).

On the other hand, in the processing of S54, if the connection to the AP90 has failed (S54: No), the fact (connection error) that the connectionhas failed is transmitted from the BT communication part 5 to the mobileterminal 50 (S56). After the processing of S56, the processing of S50onwards is repeated. After the processing of S55, the Wi-Ficommunication part setup processing is ended.

Next, processing of the setup mode of the mobile terminal 50 isdescribed. FIG. 12 is a flowchart of the mobile terminal setupprocessing (S11). In the mobile terminal setup processing, first, it isconfirmed whether user registration of the user H with the server 70 hasbeen completed (S60). In the processing of S60, if the user registrationof the user H with the server 70 has not been completed (S60: No), theuser registration of the user H is performed by transmitting the account(that is, e-mail address) and password of the user H to the server 70(S61). After the processing of S61, the processing of S60 onwards isrepeated.

In the processing of S60, if the user registration of the user H withthe server 70 has been completed (S60: Yes), login to the server 70 isperformed by transmitting the account and password of the user H to theserver 70 by communication using an HTTPS protocol (S62). After theprocessing of S62, it is confirmed whether a response to the loginreceived from the server 70 by communication using an HTTPS protocol is“OK” (S63).

In the processing of S63, if the response to the login is not “OK” (S63:No), display (error display) indicating that the login has failed isperformed on the LCD 56 (S64). After the processing of S64, theprocessing of S62 onwards is repeated.

In the processing of S63, if the response to the login is “OK” (S63:Yes), the HTTPS access authorization information is received from theserver 70. Then, pairing with the communication device 1 is performed bysearching for the communication device 1 by the BT communication part 60(S65). After the processing of S65, it is confirmed whether pairing withthe communication device 1 has been established (S66). In the processingof S66, if the pairing has not been established (S66: No), theprocessing of S65 onwards is repeated.

In the processing of S66, if the pairing has been established (S66:Yes), the device registration data is requested from the communicationdevice 1 from the BT communication part 60 (S67). After the processingof S67, it is confirmed whether the device registration data has beenreceived from the communication device 1 by the BT communication part 60(S68). In the processing of S68, if the device registration data has notbeen received (S68: No), the processing of S68 is repeated.

In the processing of S68, if the device registration data has beenreceived (S68: Yes), the received device registration data istransmitted to the server 70 from the base communication part 61 bycommunication using an HTTPS protocol (S69). At this time, the HTTPSaccess authorization information received by the processing of S63 isincluded in the transmission.

After the processing of S69, it is confirmed whether a response to thetransmission of the device registration data received from the server 70by communication using an HTTPS protocol is “OK” (S70). In theprocessing of S70, if the response to the transmission of the deviceregistration data is not “OK” (S70: No), display (error display)indicating that the transmission has failed is performed on the LCD 56(S71). After the processing of S71, the processing of S67 onwards isrepeated. On the other hand, in the processing of S70, if the responseto the transmission of the device registration data is “OK” (S70: Yes),a list of APs 90 is requested from the communication device 1 by the BTcommunication part 60 (S72).

After the processing of S72, it is confirmed whether the list of APs 90has been received from the communication device 1 by the BTcommunication part 60 (S73). In the processing of S73, if the list ofAPs 90 has not been received (S73: No), the processing of S73 isrepeated. On the other hand, in the processing of S73, if the list ofAPs 90 has been received (S73: Yes), the received list of APs 90 isdisplayed on the LCD 56 (S74).

After the processing of S74, it is confirmed whether the AP 90 on thelist displayed on the LCD 56 has been selected (specified) via the touchpanel 57 and the input PSW (AP password) thereof has been input (S75).In the processing of S75, if the AP 90 has not been selected and theinput PSW has not been input (S75: No), the processing of S75 isrepeated. On the other hand, in the processing of S75, if the AP 90 hasbeen selected and the input PSW has been input (S75: Yes), theinformation about the AP 90 and the input PSW are transmitted to thecommunication device 1 by the BT communication part 60 (S76).

After the processing of S76, it is confirmed whether a result ofconnection to the AP 90 has been received from the communication device1 by the BT communication part 60 (S77). In the processing of S77, ifthe result of connection to the AP 90 has not been received (S77: No),the processing of S77 is repeated. On the other hand, in the processingof S77, if the result of connection to the AP 90 has been received (S77:Yes), it is confirmed whether the received result of connection is“connection successful” (S78).

In the processing of S78, if the received result of connection is“connection error” (S78: No), display (error display) indicating thatthe connection has failed is performed on the LCD 56 (S79), and theprocessing of S74 onwards is repeated. On the other hand, in theprocessing of S78, if the received result of connection is “connectionsuccessful” (S78: Yes), the mobile terminal setup processing is ended.

Next, processing of the setup mode of the server 70 is described. FIG.13 is a flowchart of the server setup processing (S20). In the serversetup processing, first, standby is performed until communication usingan HTTPS protocol occurs (S80). After the processing of S80, it isconfirmed whether user registration has been requested from the mobileterminal 50 by communication using an HTTPS protocol (S81).

In the processing of S81, if the user registration has been requested(S81: Yes), it is confirmed whether the account received from the mobileterminal 50 is not registered in the user DB 72 b (see FIG. 7B) (S82).In the processing of S82, if the account received from the mobileterminal 50 is not registered in the user DB 72 b (S82: Yes), theaccount and password received from the mobile terminal 50 and a uniquelycreated user identifier are registered in the user DB 72 b (S83). Afterthe processing of S83, the fact (“OK”) that the received account hasbeen registered in the user DB 72 b is transmitted to the mobileterminal 50 by communication using an HTTPS protocol (S84).

On the other hand, in the processing of S82, if the account receivedfrom the mobile terminal 50 has been registered in the user DB 72 b(S82: No), the fact (ERROR) that the received account has already beenregistered in the user DB 72 b is transmitted to the mobile terminal 50by communication using an HTTPS protocol (S85). After the processings ofS84 and S85, the processing of S80 onwards is repeated.

In the processing of S81, if no request for user registration has beenmade (S81: No), it is confirmed whether login has been requested fromthe mobile terminal 50 by communication using an HTTPS protocol (S86).In the processing of S86, if login has been requested (S86: Yes), loginis executed, and it is confirmed whether the login has succeeded (S87).In the processing of S87, if the login has succeeded (S87: Yes), theHTTPS access authorization information of the logged-in user H iscreated (S88).

After the processing of S88, the created HTTPS access authorizationinformation and the fact (“OK”) that the login has succeeded aretransmitted to the mobile terminal 50 by communication using an HTTPSprotocol (S89).

On the other hand, in the processing of S87, if the login has failed(S87: No), the fact (ERROR) is transmitted by communication using anHTTPS protocol (S90). After the processings of S89 and S90, theprocessing of S80 onwards is repeated.

In the processing of S86, if it is not a login request (S86: No), it isconfirmed whether the device registration data has been received fromthe mobile terminal 50 by communication using an HTTPS protocol (S91).In the processing of S91, if the device registration data has beenreceived (S91: Yes), it is confirmed whether a device identifier in thereceived device registration data exists in the device DB 72 c (S92).

In the processing of S92, if the device identifier in the receiveddevice registration data exists in the device DB 72 c (S92: Yes),product information of the received device registration data and theuser identifier of the logged-in user H acquired from the user DB 72 bare stored in a region of the device identifier of the received deviceregistration data in the device DB 72 c (S93). After the processing ofS93, the fact (“OK”) that the received device registration data has beensuccessfully registered in the device DB 72 c is transmitted bycommunication using an HTTPS protocol (S94).

On the other hand, in the processing of S92, if the device identifier inthe received device registration data does not exist in the device DB 72c (S92: No), the fact (“ERROR”) that the device registration data is notthat of a regular communication device 1 is transmitted by communicationusing an HTTPS protocol (S95). After the processings of S94 and S95, theserver setup processing is ended.

Next, processing of the communication device 1, the mobile terminal 50and the server 70 after the setup mode is described. First, processingof the communication device 1 after the setup mode is described withreference to FIG. 10 and FIG. 14 .

In the processing of S40 of FIG. 10 , if there is no instruction for thesetup mode (S40: No), the AP 90 is connected by the Wi-Fi communicationpart 4 by using the information about the AP 90 and the input PSWacquired by the processing of FIG. 9 described above (S42). After theprocessing of S42, it is confirmed whether connection to the AP 90 canbe established (S43).

In the processing of S43, if the AP 90 can be connected (S43: Yes),Wi-Fi communication part workflow processing (S44) is performed. Detailsof the Wi-Fi communication part workflow processing will be describedlater.

On the other hand, if the AP 90 cannot be connected (S43: No), it isconfirmed whether the number of attempts to connect to the AP 90 hasreached an upper limit of the number (for example, 10 times) of retries(S45). In the processing of S45, if the number of attempts to connect tothe AP 90 has not reached the upper limit of the number of retries (S45:No), the processing of S42 onwards is repeated; if the upper limit ofthe number of retries has been reached (S45: Yes), an error is displayedby blinking the LED 3 (S46). After the processings of S41, S44 and S46,the Wi-Fi main processing is ended.

Here, the Wi-Fi communication part workflow processing of S44 isdescribed with reference to FIG. 14 . FIG. 14 is a flowchart of theWi-Fi communication part workflow processing. In the Wi-Fi communicationpart workflow processing (S44), first, the server 70 is connected inorder to perform communication using an MQTT protocol (S100).

After the processing of S100, it is confirmed whether the server 70 canbe connected by the processing of S100 (S101). In the processing ofS101, if the server 70 cannot be connected (S101: No), the processing ofS100 onwards is repeated.

On the other hand, in the processing of S101, if the server 70 can beconnected (S101: Yes), a request topic of authorization information(that is, the user identifier and the HTTPS access authorizationinformation) is transmitted to the server 70 by the Wi-Fi communicationpart 4 by using MQTT protocol communication (S102). Such a request topicincludes the device identifier of the communication device 1. Theprocessings of S100 and S102 are not necessarily executed according to ajudgment made by the communication device 1. For example, in the casewhere the electronic musical instrument 30 recognizes that thecommunication device 1 is connected to the server 70, the processings ofS100 and S102 may be executed by giving instructions to thecommunication device 1 from the electronic musical instrument 30.

After the processing of S102, it is confirmed whether the useridentifier and the HTTPS access authorization information have beenreceived from the server 70 by the Wi-Fi communication part 4 bycommunication using an MQTT protocol (S103). In the processing of S103,if the user identifier and the HTTPS access authorization informationhave not been received (S103: No), the processing of S103 is repeated.

On the other hand, in the processing of S103, if the user identifier andthe HTTPS access authorization information have been received (S103:Yes), the received user identifier and HTTPS access authorizationinformation are transmitted to the electronic musical instrument 30 viathe external IF 15 (S104). Hereinafter, communication between thecommunication device 1 and the electronic musical instrument 30 in theWi-Fi communication part workflow processing is assumed to be performedvia the external IF 15.

The HTTPS access authorization information is not necessarilytransmitted to the electronic musical instrument 30, and may, forexample, be stored in the communication device 1. At that time, if theHTTPS access authorization information is required for communicationusing an HTTPS protocol, the electronic musical instrument 30 mayinstruct the communication device 1 to add the HTTPS accessauthorization information to the transmission. By doing so, since theHTTPS access authorization information can be prevented from leakingfrom the external IFs 15 and 37, security in the communication betweenthe electronic musical instrument 30 and the server 70 can be improved.

In the electronic musical instrument 30, an instruction for utilizing aresource such as timbre data is created to the server 70 by using theuser identifier and the HTTPS access authorization information receivedfrom the communication device 1. Details thereof will be described withreference to FIG. 15 in the electronic musical instrument workflowprocessing to be described later.

After the processing of S104, subscription registration is performedwith respect to the server 70 by the user identifier received by theprocessing of S103 and the device identifier of the device identifier 11b (S105). From this point on, the communication device 1 becomes able toreceive MQTT data including the topic “topic/{user identifier}/{deviceidentifier}/#”.

By transmitting the MQTT data including the topic from the mobileterminal 50 to the server 70, the communication device 1 receives theMQTT data from the server 70. A result obtained by receiving the MQTTdata from the communication device 1 or the mobile terminal 50 andprocessing the same by the server 70 is transmitted to the communicationdevice 1 as the MQTT data including the topic. In this way, thecommunication device 1 becomes able to exchange commands or data withthe server 70 or with the mobile terminal 50 via the server 70.

After the processing of S105, various events in the communication device1 are confirmed (S106). In the processing of S106, if the MQTT data,that is, a topic from the server 70 and a payload transmitted togetherwith the topic, are received from the server 70 (S106: receive MQTT datafrom server), the MQTT data is transmitted to the electronic musicalinstrument 30 via the external IF 15 (S107). Here, the MQTT data refersto a topic and a payload transmitted together with the topic. Thispayload includes information accompanying instructions to the electronicmusical instrument 30 or the server 70, a resource such as timbre datarequested from the server 70, a result of processing by the server 70,or the like.

In the processing of S106, if the MQTT data is received from theelectronic musical instrument 30 (S106: receive MQTT data fromelectronic musical instrument), the MQTT data is transmitted to theserver 70 by communication using MQTT (S108).

In the processing of S106, if an HTTPS request is received from theelectronic musical instrument 30 (S106: receive HTTPS request fromelectronic musical instrument), the HTTPS request is transmitted to theserver 70 by communication using an HTTPS protocol (S109).

In the processing of S106, if an HTTPS response is received from theserver 70 (S106: receive HTTPS response from server), the HTTPS responseis transmitted to the electronic musical instrument 30 (S110). On theother hand, if no event has been received in the processing of S106(S106: “no event”), or, after the processings of S107 to S110, theprocessing of S106 onwards is repeated.

Next, the electronic musical instrument workflow processing is describedwith reference to FIG. 15 . FIG. 15 is a flowchart of the electronicmusical instrument workflow processing. The electronic musicalinstrument workflow processing is processing executed after power of theelectronic musical instrument 30 is turned on.

In the electronic musical instrument workflow processing, first, it isconfirmed whether the user identifier and the HTTPS access authorizationinformation have been received from the communication device 1 via theexternal IF 37 (S130). Hereinafter, communication between the electronicmusical instrument 30 and the communication device 1 in the electronicmusical instrument workflow processing is assumed to be performed viathe external IF 37.

In the processing of S130, if the user identifier and the HTTPS accessauthorization information have been received (S130: Yes), the receiveduser identifier and HTTPS access authorization information are acquired(S131). On the other hand, in the processing of S130, if the useridentifier and the HTTPS access authorization information have not beenreceived (S130: No), the processing of S131 is skipped.

After the processings of S130 and S131, various events of the electronicmusical instrument 30 are confirmed (S132). In the processing of S132,if an instruction for the server 70 is input from the user H via thesetting key 35 of the electronic musical instrument 30 (S132: “inputinstruction for server”), MQTT data or an HTTPS request according to theinstruction is created and transmitted to the communication device 1(S133). At this time, the user identifier and the HTTPS accessauthorization information are included in the transmission.

In the processing of S132, if the MQTT data is received from thecommunication device 1 (S132: “receive MQTT data from communicationdevice”), the received MQTT data is analyzed (S134), and processingaccording to the analyzed MQTT data is performed (S135). In theprocessing of S132, if an HTTPS response is received from thecommunication device 1 (S132: “receive HTTPS response from communicationdevice”), processing according to the received HTTPS response isperformed (S136).

As the processings of S133 to S136, for example, in the mobile terminal50, a list of available timbre data is acquired from the server 70 bycommunication using an MQTT protocol. The list of timbre data isdisplayed on the LCD 56 of the mobile terminal 50, and the user H iscaused to make a selection via the touch panel 57. Informationspecifying the timbre data selected by the user H is transmitted to theserver 70. The information specifying the timbre data is received by theelectronic musical instrument 30 via the communication device 1, and thetimbre data specified by the information is requested from the server 70by communication using an HTTPS protocol. The timbre data received fromthe server 70 by communication using an HTTPS protocol based on therequest is utilized by the electronic musical instrument 30.

If no event has been received in the processing of S132 (S132: “noevent”), or, after the processings of S133, S135 and S136, theprocessing of S132 onwards is repeated.

Next, processing of the mobile terminal 50 after the setup mode isdescribed with reference to FIG. 16 . FIG. 16 is a flowchart of themobile terminal workflow processing (S12). In the mobile terminalworkflow processing, first, the user H logs in to the server 70 bycommunication using an HTTPS protocol (S140).

After the processing of S140, it is confirmed whether a response to thelogin received from the server 70 by communication using an HTTPSprotocol is “OK” (S141). In the processing of S141, if the response tothe login is not “OK” (S141: No), display (error display) indicatingthat the login has failed is performed on the LCD 56 (S142). After theprocessing of S142, the processing of S140 onwards is repeated.

On the other hand, in the processing of S141, if the response to thelogin is “OK” (S141: Yes), the HTTPS access authorization informationreceived from the server 70 is acquired together with the response tothe login (S143). The acquired HTTPS access authorization informationwill be used in subsequent HTTPS protocol communication from the mobileterminal 50 to the server 70. After the processing of S143, the useridentifier of the user H is requested from the server 70 bycommunication using an HTTPS protocol (S144). After the processing ofS144, it is confirmed whether a response to the request for the useridentifier is “OK” (S145).

In the processing of S145, if the response to the request for the useridentifier is not “OK” (S145: No), display (error display) indicatingthat the request for the user identifier has failed is performed on theLCD 56 (S146). After the processing of S146, the processing of S144onwards is repeated. In the processing of S145, if the response to therequest for the user identifier is “OK” (S145: Yes), the user identifieris acquired from the server 70 (S147).

After the processing of S147, a device identifier corresponding to theacquired user identifier is requested from the server 70 bycommunication using an HTTPS protocol (S148). After the processing ofS148, it is confirmed whether a response to the request for the deviceidentifier is “OK” (S149). In the processing of S149, if the response tothe request for the device identifier is not “OK” (S149: No), display(error display) indicating that the request for the device identifierhas failed is performed on the LCD 56 (S150). After the processing ofS150, the processing of S148 onwards is repeated. In the processing ofS149, if the response to the request for the device identifier is “OK”(S149: Yes), the device identifier is acquired from the server 70(S151).

After the processing of S151, the server 70 is connected in order toperform communication using an MQTT protocol (S152). After theprocessing of S152, it is confirmed whether the server 70 can beconnected by the processing of S152 (S153). In the processing of S153,if the server 70 cannot be connected (S153: No), the processing of S152onwards is repeated.

In the processing of S153, if the server 70 can be connected (S153:Yes), subscription registration is performed with respect to the server70 by the user identifier received by the processing of S147 and thedevice identifier received by the processing of S151 (S154). From thispoint on, the mobile terminal 50 becomes able to receive MQTT dataincluding the topic “topic/{user identifier}/{device identifier}/#(#:any command such as data request or data)”.

By transmitting the MQTT data including the topic from the communicationdevice 1 to the server 70, the mobile terminal 50 receives the MQTT datafrom the server 70. A result obtained by receiving the MQTT data fromthe communication device 1 or the mobile terminal 50 and processing thesame by the server 70 is transmitted to the mobile terminal 50 as theMQTT data including the topic. In this way, the mobile terminal 50becomes able to exchange commands or data with the server 70 or with thecommunication device 1 via the server 70.

After the processing of S154, various events of the mobile terminal 50are confirmed (S155). In the processing of S155, if there is an event(S155: “there is event”), mobile terminal event processing (S156) isexecuted. Examples of the mobile terminal event processing includecreating MQTT data or an HTTPS request according to an instruction inputto the mobile terminal 50 and transmitting the same to the server 70,analyzing the MQTT data received by the mobile terminal 50 andperforming processing according to the MQTT data, and performingprocessing according to an HTTPS response from the server 70, like theprocessings of S133 to 5136 of FIG. 15 described above.

If there is no event in the processing of S155 (S155: “no event”), or,after the processing of S156, the processing of S155 onwards isrepeated.

Next, processing of the server 70 after the setup mode is described withreference to FIG. 17 and FIG. 18 . FIG. 17 is a flowchart of the HTTPSworkflow processing (S21). In the HTTPS workflow processing, first, itis confirmed whether login has been requested from the mobile terminal50 by communication using an HTTPS protocol (S160).

In the processing of S160, if login has been requested (S160: Yes),login is executed, and it is confirmed whether the login has succeeded(OK) (S161). In the processing of S161, if the login has succeeded(S161: Yes), the HTTPS access authorization information of the logged-inuser H is created (S162). After the processing of S162, a response of“OK” to the login is transmitted together with the created HTTPS accessauthorization information to the mobile terminal 50 by communicationusing an HTTPS protocol (S163).

On the other hand, in the processing of S161, if the login has failed(S161: No), a response of “ERROR” to the login is transmitted to themobile terminal 50 by communication using an HTTPS protocol (S164).After the processings of S163 and S164, the processing of S160 onwardsis repeated.

In the processing of S160, if it is not a login request (S160: No), itis confirmed whether a request for user identifier has been made fromthe mobile terminal 50 by communication using an HTTPS protocol (S165).In the processing of S165, if a request for user identifier has beenmade (S165: Yes), a user identifier corresponding to the account of theuser H of the mobile terminal 50 that made the request is acquired fromthe user DB 72 b (S166). After the processing of S166, the acquired useridentifier and a response of “OK” to the request for user identifier aretransmitted to the mobile terminal 50 by communication using an HTTPSprotocol (S167). After the processing of S167, the processing of S160onwards is repeated.

In the processing of S165, if it is not a request for user identifier(S165: No), it is confirmed whether a request for device identifier hasbeen made from the mobile terminal 50 by communication using an HTTPSprotocol (S168). In the processing of S168, if a request for deviceidentifier has been made (S168: Yes), a user identifier corresponding tothe account of the user H of the mobile terminal 50 that made therequest is acquired from the user DB 72 b, and a device identifiercorresponding to the user identifier is further acquired from the deviceDB 72 c (S169).

After the processing of S169, the acquired device identifier and aresponse of “OK” to the request for device identifier are transmitted tothe mobile terminal 50 by communication using an HTTPS protocol (S170).After the processing of S170, the processing of S160 onwards isrepeated.

In the processing of S168, if it is not a request for device identifier(S168: No), server HTTPS event processing (S171) is executed, and theprocessing of S160 onwards is repeated. Examples of the server HTTPSevent processing include processing in which an HTTPS request receivedfrom the communication device 1 or the mobile terminal 50 bycommunication using an HTTPS protocol is processed and a processingresult is transmitted as an HTTPS response by communication using anHTTPS protocol. At this time, in the case where the HTTPS accessauthorization information included in the HTTPS request is valid, theHTTPS response is transmitted; in the case where the HTTPS accessauthorization information included in the HTTPS request is invalid,transmission of the HTTPS response may be omitted.

FIG. 18 is a flowchart of the MQTT workflow processing (S22). In theMQTT workflow processing, first, standby is performed untilcommunication connection using an MQTT protocol occurs (S190). After theprocessing of S190, it is confirmed whether a connection has been madeby communication using an MQTT protocol (S191). In the processing ofS191, if no connection has been made by communication using an MQTTprotocol (S191: No), the processing of S190 onwards is repeated.

On the other hand, in the processing of S191, if a connection has beenmade by communication using an MQTT protocol (S191: Yes), it is furtherconfirmed whether MQTT data has been received (S192).

In the processing of S192, if MQTT data has been received (S192: Yes), atopic of the received MQTT data is acquired (S193). After the processingof S193, the MQTT data received by the processing of S192 is transmittedto a terminal (that is, the communication device 1 or the mobileterminal 50) that subscribes to the acquired topic (S194).

Accordingly, since the MQTT data received from the communication device1 or the mobile terminal 50 is transmitted to the mobile terminal 50 orthe communication device 1 used by the same user H, the MQTT datatransmitted from the communication device 1 or the mobile terminal 50can be utilized and managed by the respective terminals.

After the processing of S194, it is confirmed whether the topic acquiredby the processing of S193 includes a command that needs to be processedby the server 70 (S195). In the processing of S195, if the acquiredtopic includes a command that needs to be processed by the server 70(S195: Yes), it is confirmed whether the command of the topic relates toa request for authorization information (that is, user identifier andHTTPS access authorization information) from the communication device 1(S196).

In the processing of S196, if it relates to a request for authorizationinformation from the communication device 1 (S196: Yes), a useridentifier corresponding to the device identifier of the communicationdevice 1 that received the request is acquired from the device DB 72 c,and the HTTPS access authorization information is created from theacquired user identifier (S197). After the processing of S197, the useridentifier acquired and the HTTPS access authorization informationcreated by the processing of S197 are transmitted to the communicationdevice 1 that made the request by communication using an MQTT protocol(S198).

In the processings of S197 and S198, in the case where the useridentifier corresponding to the device identifier of the communicationdevice 1 that received the request is stored in the device DB 72 c, theHTTPS access authorization information is created by the processing ofS197, and the user identifier and the created HTTPS access authorizationinformation are transmitted by the processing of S198. On the otherhand, in the case where the user identifier corresponding to the deviceidentifier of the communication device 1 that received the request isnot stored in the device DB 72 c, creation of HTTPS access authorizationinformation by the processing of S197 and transmission by the processingof S198 may be skipped.

On the other hand, in the processing of S196, if it does not relate to arequest for authorization information from the communication device 1(S196: No), server MQTT event processing (S199) is executed. Examples ofthe server MQTT event processing include changing a processing result bythe server 70 obtained by processing requested from the communicationdevice 1 or the mobile terminal 50 by using MQTT data into MQTT data,and transmitting the same.

If no MQTT data has been received (S192: No) and a command that needs tobe processed by the server 70 is not included in the processing of S195(S195: No), or, after the processings of S198 and S199, the processingof S192 onwards is repeated.

Although the disclosure has been described based on the aboveembodiments, it can be easily inferred that various improvements ormodifications may be made.

In the above embodiments, the communication device 1 is configured to bemounted on the electronic musical instrument 30. However, the disclosureis not limited thereto. The communication device 1 may be built in theelectronic musical instrument 30, and the processing concerning thecommunication device 1 may be executed by the electronic musicalinstrument 30. In this case, the device identifier is set as anidentifier uniquely set for each electronic musical instrument 30, andthe device identifier or product information (that is, deviceregistration data) concerning the electronic musical instrument 30 maybe stored.

In the above embodiments, the communication device 1 is provided withthe AP information 11 d and the AP password 11 e, and the AP 90 isconnected by using the information about the AP 90 and the input PSWstored in the AP information 11 d and the AP password 11e. However, thedisclosure is not limited thereto. For example, the information aboutthe AP 90 and the input PSW received from the mobile terminal 50 may betransmitted to the electronic musical instrument 30 via the external IF15 and be stored in the flash ROM 32 or the like of the electronicmusical instrument 30. When the communication device 1 is connected tothe AP 90, the information about the AP 90 and the input PSW stored inthe electronic musical instrument 30 may be acquired from the electronicmusical instrument 30, and the AP 90 may be connected by using theacquired information about the AP 90 and input PSW.

In the above embodiments, the communication device 1 is provided withthe operation button 2 and the LED 3, and by pressing and holding theoperation button 2, the communication device 1 is caused to shift to thesetup mode, and the LED 3 is caused to blink at this time. However, thedisclosure is not limited thereto. For example, by a predeterminedoperation of the setting key 35 of the electronic musical instrument 30,the communication device 1 may be caused to shift to the setup mode, andthe LCD 36 may display that the communication device 1 is in the setupmode. In this case, the operation button 2 and the LED 3 may be omittedfrom the communication device 1.

In the above embodiments, the server 70 creates the HTTPS accessauthorization information based on the user identifier of the user H andtransmits the same to the communication device 1 and/or the mobileterminal 50, and receives a resource from the communication device 1and/or the mobile terminal 50 by communication using an HTTPS protocolbased on the HTTPS access authorization information. However, theauthorization information created by the server 70 is not limited to theHTTPS access authorization information. The server 70 may createauthorization information in other communication protocols and transmitthe same to the communication device 1 and/or the mobile terminal 50,and the communication device 1 and/or the mobile terminal 50 may receivea resource from the server 70 by using the authorization informationtransmitted from the server 70.

In the above embodiments, the AP 90 to be connected by Wi-Fi by thecommunication device 1 is selected by the user H by the mobile terminal50, and the input PSW is input by the user H by the mobile terminal 50.However, the disclosure is not limited thereto. For example, in the casewhere the AP 90 that can be connected by the mobile terminal 50 isselected by the user H from the list of the APs 90 received from thecommunication device 1, input of the input PSW by the user H by themobile terminal 50 may be omitted, and a password used by the mobileterminal 50 for connecting the AP 90 may be transmitted as the input PSWto the communication device 1. Further, in the case where the AP 90 thatcan be connected by the mobile terminal 50 is included in the list ofAPs 90 received from the communication device 1, selection of the AP 90by the user H by the mobile terminal 50 may be omitted, the AP 90 thatcan be connected by the mobile terminal 50 may be automaticallyselected, and the information about the AP 90 concerning the AP 90 thatcan be connected by the mobile terminal 50 and a password used forconnecting the AP 90 may be transmitted to the communication device 1.

In the above embodiments, the communication system S is composed of theelectronic musical instrument 30 to which the communication device 1 isconnected, the mobile terminal 50, and the server 70. However, thedisclosure is not limited thereto. The mobile terminal 50 may beequipped with the function of the server 70, and the server 70 may beomitted from the communication system S. In contrast, the server 70 maybe equipped with the function of the mobile terminal 50, and the mobileterminal 50 may be omitted from the communication system S.

In the above embodiments, by connecting the communication device 1 tothe AP 90 by Wi-Fi, and by connecting the AP 90 to the Internet N, thecommunication device 1 communicates with the server 70 via the InternetN. However, the disclosure is not limited thereto. For example, thecommunication device 1 may be connected to the base station 100 and beconnected to the Internet N via the base station 100 in the same manneras the mobile terminal 50. In this case, the base station 100 to whichthe communication device 1 is connected and the base station 100 towhich the mobile terminal 50 is connected do not have to be the samebase station. The communication device 1 may be connected to the AP 90by a wireless communication standard other than Wi-Fi, or thecommunication device 1 and the Internet N may be connected by wiredcommunication.

By connecting the mobile terminal 50 to the base station 100 andconnecting the base station 100 to the Internet N, the mobile terminal50 communicates with the server 70 via the Internet N. However, thedisclosure is not limited thereto. For example, the mobile terminal 50may be connected to the AP 90 by Wi-Fi and may be connected to theInternet N via the AP 90. In this case, the AP 90 to which thecommunication device 1 is connected and the AP 90 to which the mobileterminal 50 is connected do not have to be the same access point. Themobile terminal 50 and the Internet N may be connected by wiredcommunication.

In the above embodiments, the communication device 1 and the mobileterminal 50 communicate with each other by Bluetooth. However, thedisclosure is not limited thereto. For example, the communication device1 and the mobile terminal 50 may be communicated by other short-rangewireless communication standards such as ZigBee, or the communicationdevice 1 and the mobile terminal 50 may be connected by wire forcommunication.

In the above embodiments, a terminal (information processing device) towhich an instruction is input from the user H is exemplified by themobile terminal 50. However, the disclosure is not limited thereto. Forexample, examples may include a terminal to which an instruction isinput from the user H, such as a personal computer or a tablet terminal.

In the above embodiments, an electronic device to which thecommunication device 1 is connected is exemplified by the electronicmusical instrument 30. However, the disclosure is not limited thereto.An electronic device to which the communication device 1 is connectedmay be a video device for processing a video. At this time, as aresource, video data or audio data, and data concerning editing such asscene switching may be stored on the server 70, and data according to aninstruction from the video device may be transmitted to thecommunication device 1.

Furthermore, besides the above embodiments, the disclosure also includesthe following embodiments.

(1) A network communication system including a server, the servercomprising:

-   -   at least one non-transient data storage device storing data        including a plurality of device identifiers in association with        a plurality of user identifiers, where each device identifier is        associated with a user identifier; and    -   at least one processor configured to:    -   connect for communication, via a login connection, with a        terminal of a user associated with one of the user identifiers;    -   acquire from the at least one non-transient data storage device,        a device identifier associated with the user identifier of the        user of the terminal connected via the login connection;    -   receive the device identifier and processing instruction for an        electronic device associated with the device identifier; and    -   transmit the received processing instruction to the electronic        device associated with the device identifier.

(2) The network communication system of (1), wherein the at least oneprocessor is further configured to:

-   -   receive at least one processing instruction for processing by        the server;    -   perform processing defined by the instruction to provide a        processing result; and    -   transmit the processing result to the electronic device        associated with the device identifier.

(3) The network communication system of (1), wherein the at least oneprocessor is further configured to:

-   -   receive at least one processing instruction from the electronic        device associated with the device identifier;    -   conduct processing in accordance with the received instruction        to provide a processing result; and    -   transmit the processing result to the electronic device        associated with the device identifier.

(4) The network communication system of (1), further comprising acommunication device having communication electronics and processingelectronics configured to control the communication device to:

-   -   receive a processing instruction or a processing result from the        server; and    -   transmit the received processing instruction or the received        processing result to the electronic device.

(5) The network communication system of (4), wherein the communicationelectronics of the communication device comprise wireless communicationelectronics for wireless communication connection with the server toreceive the processing instruction from the server by wirelesscommunication.

(6) The network communication system of (1), further comprising acommunication device having communication electronics and processingelectronics configured to control the communication device to:

-   -   receive an instruction from the electronic device; and    -   transmit the received instruction to the server.

(7) The network communication system of (6), wherein the communicationelectronics of the communication device comprise wireless communicationelectronics for wireless communication connection with the electronicdevice to receive the instruction from the electronic device by wirelesscommunication.

(8) The network communication system of (1), further comprising aterminal having communication electronics and processing electronicsconfigured to control the terminal to:

-   -   log in to the server;    -   receive the device identifier from the server; and vtransmit to        the server the device identifier and an instruction for the        electronic device.

(9) The network communication system of (8), wherein the communicationelectronics of the terminal comprise wireless communication electronicsfor wireless communication connection with the server to transmit thedevice identifier and instruction to the server by wirelesscommunication.

(10) The network communication system of (1), further comprising aterminal having communication electronics and processing electronicsconfigured to control the terminal to:

-   -   receive a plurality of device identifiers;    -   acquire inputted information corresponding to a user's selection        of one of the device identifiers from the plurality of device        identifiers; and    -   transmit an instruction to the electronic device associated with        the selected device identifier.

(11) The network communication system of (10), wherein the communicationelectronics of the terminal comprise wireless communication electronicsfor wireless communication connection with the electronic device totransmit the instruction to the electronic device by wirelesscommunication.

(12) A communication method comprising:

-   -   storing, in at least one non-transient data storage device, data        including a plurality of device identifiers in association with        a plurality of user identifiers, where each device identifier is        associated with a user identifier; and    -   configuring at least one processor to:    -   connect for communication, via a login connection, with a        terminal of a user associated with one of the user identifiers;    -   acquire from the at least one non-transient data storage device,        a device identifier associated with the user identifier of the        user of the terminal connected via the login connection;    -   receive the device identifier and processing instruction for an        electronic device associated with the device identifier; and    -   transmit the received processing instruction to the electronic        device associated with the device identifier.

(13) The method of (12), wherein the at least one processor is furtherconfigured to:

-   -   receive at least one processing instruction for processing by        the server;    -   perform processing defined by the instruction to provide a        processing result; and    -   transmit the processing result to the electronic device        associated with the device identifier.

(14) The method of (12), wherein the at least one processor is furtherconfigured to:

-   -   receive at least one processing instruction from the electronic        device associated with the device identifier;    -   conduct processing in accordance with the received instruction        to provide a processing result; and    -   transmit the processing result to the electronic device        associated with the device identifier.

(15) The method of (12), further comprising providing a communicationdevice having communication electronics and processing electronics, andconfiguring the processing electronics of the communication device tocontrol the communication device to:

-   -   receive a processing instruction or a processing result from the        server; and    -   transmit the received processing instruction or the received        processing result to the electronic device.

(16) The method of (15), wherein the communication electronics of thecommunication device comprise wireless communication electronics forwireless communication connection with the server to receive theprocessing instruction from the server by wireless communication.

(17) The method of (12), further comprising providing a communicationdevice having communication electronics and processing electronics, andconfiguring the processing electronics of the communication device tocontrol the communication device to:

-   -   receive an instruction from the electronic device; and    -   transmit the received instruction to the server.

(18) The method of (17), wherein the communication electronics of thecommunication device comprise wireless communication electronics forwireless communication connection with the electronic device to receivethe instruction from the electronic device by wireless communication.

(19) The method of (12), further comprising providing a terminal havingcommunication electronics and processing electronics, and configuringthe processing electronics of the terminal to control the terminal to:

-   -   log in to the server;    -   receive the device identifier from the server; and    -   transmit to the server the device identifier and an instruction        for the electronic device.

(20) The method of (18), wherein the communication electronics of theterminal comprise wireless communication electronics for wirelesscommunication connection with the server to transmit the deviceidentifier and instruction to the server by wireless communication.

(21) The method of (12), further comprising providing a terminal havingcommunication electronics and processing electronics, and configuringthe processing electronics of the terminal to control the terminal to:

-   -   receive a plurality of device identifiers;    -   acquire inputted information corresponding to a user's selection        of one of the device identifiers from the plurality of device        identifiers; and    -   transmit an instruction to the electronic device associated with        the selected device identifier.

(22) The method of (21), wherein the communication electronics of theterminal comprise wireless communication electronics for wirelesscommunication connection with the electronic device to transmit theinstruction to the electronic device by wireless communication.

What is claimed is:
 1. A communication system, comprising: a terminal;an electronic device; and a server, wherein the terminal comprises: alogin part, logging in to the server; an identifier reception part,receiving from the server a device identifier being an identifier of theelectronic device corresponding to a user who has logged in by the loginpart; and a terminal instruction transmission part, transmitting to theserver the device identifier received by the identifier reception partand an instruction for the electronic device; and the server comprises:an identifier storage part, storing a user identifier being anidentifier of the user in association with the device identifier of theelectronic device corresponding to the user; an identifier transmissionpart, acquiring from the identifier storage part the device identifiercorresponding to the user identifier of the user of the terminal thathas logged in and transmitting the device identifier to the terminalthat has logged in; a first server instruction reception part, receivingfrom the terminal the device identifier and the instruction for theelectronic device; and a server instruction transmission part,transmitting the instruction received by the first server instructionreception part to the electronic device corresponding to the deviceidentifier received by the first server instruction reception part. 2.The communication system according to claim 1, wherein the electronicdevice comprises a device execution part that executes processingaccording to the instruction received from the server.
 3. Thecommunication system according to claim 2, wherein the server furthercomprises a server execution part that, in response to the instructionreceived by the first server instruction reception part requiringprocessing by the server, performs the processing according to theinstruction; the server instruction transmission part of the server isconfigured to transmit the instruction received by the first serverinstruction reception part and a processing result of the processingperformed by the server execution part to the electronic devicecorresponding to the device identifier received by the first serverinstruction reception part; the device execution part of the electronicdevice is configured to execute the processing according to theinstruction received from the server and processing according to theprocessing result received from the server.
 4. The communication systemaccording to claim 2, wherein the electronic device further comprises adevice instruction transmission part that transmits to the server aninstruction according to a processing result of the processing performedby the device execution part according to the instruction received fromthe server; the server further comprises: a second server instructionreception part, receiving the instruction from the electronic device;and a server execution part, performing processing according to theinstruction received by the second server instruction reception part;the server instruction transmission part of the server is configured totransmit to the electronic device from which receives the instruction bythe second server instruction reception part a processing result of theprocessing performed by the server execution part according to theinstruction received by the second server instruction reception part;the device execution part of the electronic device is configured toexecute processing according to the processing result received from theserver.
 5. The communication system according to claim 1, furthercomprising: a communication device, connected to the electronic deviceand configured to be able to communicate with the server, wherein thecommunication device comprises: a server reception part, receiving aninstruction or a processing result from the server; and a devicetransmission part, transmitting the instruction or the processing resultreceived by the server reception part to the electronic device.
 6. Thecommunication system according to claim 5, wherein the communicationdevice further comprises: a device reception part, receiving aninstruction from the electronic device; and a communication deviceinstruction transmission part, transmitting the instruction received bythe device reception part to the server.
 7. The communication systemaccording to claim 5, wherein the communication device is mounted on theelectronic device.
 8. The communication system according to claim 5,wherein the communication device is built in the electronic device. 9.The communication system according to claim 1, wherein the electronicdevice is an electronic musical instrument; data on the server is timbredata used for sound production by the electronic musical instrument. 10.The communication system according to claim 1, wherein the terminalfurther comprises a selection part that, in response to a plurality ofdevice identifiers being received by the identifier reception part,causes the user to select one of the device identifiers; the terminalinstruction transmission part is configured to transmit the deviceidentifier selected by the selection part to the server together withthe instruction for the electronic device.
 11. A terminal configured tobe able to communicate with a server, comprising: a login part, loggingin to the server; an identifier reception part, receiving from theserver a device identifier being an identifier of an electronic devicecorresponding to a user who has logged in by the login part; and aterminal instruction transmission part, transmitting to the server thedevice identifier received by the identifier reception part and aninstruction for the electronic device.
 12. The terminal according toclaim 11, further comprising: a selection part, in response to aplurality of device identifiers being received by the identifierreception part, causing the user to select one of the deviceidentifiers, wherein the terminal instruction transmission part isconfigured to transmit the device identifier selected by the selectionpart to the server together with the instruction for the electronicdevice.
 13. The terminal according to claim 11, wherein the electronicdevice is an electronic musical instrument; the terminal is configuredto be able to acquire, for the electronic device, timbre data used forsound production by the electronic musical instrument from the server inresponse to an instruction from the user.
 14. A server configured to beable to communicate with an electronic device and a terminal,comprising: an identifier storage part, storing a user identifier beingan identifier of a user in association with a device identifier being anidentifier of the electronic device corresponding to the user; anidentifier transmission part, acquiring from the identifier storage partthe device identifier corresponding to the user identifier of the userof the terminal that has logged in and transmitting the deviceidentifier to the terminal that has logged in; a first serverinstruction reception part, receiving from the terminal the deviceidentifier and an instruction for the electronic device; and a serverinstruction transmission part, transmitting the instruction received bythe first server instruction reception part to the electronic devicecorresponding to the device identifier received by the first serverinstruction reception part.
 15. The server according to claim 14,further comprising: a server execution part, in response to theinstruction received by the first server instruction reception partrequiring processing by the server, performing the processing accordingto the instruction, wherein the server instruction transmission part isconfigured to transmit the instruction received by the first serverinstruction reception part and a processing result of the processingperformed by the server execution part to the electronic devicecorresponding to the device identifier received by the first serverinstruction reception part.
 16. The server according to claim 14,further comprising: a second server instruction reception part,receiving an instruction from the electronic device; and a serverexecution part, performing processing according to the instructionreceived by the second server instruction reception part, wherein theserver instruction transmission part is configured to transmit to theelectronic device that receives the instruction by the second serverinstruction reception part a processing result of the processingperformed by the server execution part according to the instructionreceived by the second server instruction reception part.
 17. Acommunication method by a terminal, an electronic device and a server,comprising: storing on the server a user identifier being an identifierof a user in association with a device identifier being an identifier ofthe electronic device corresponding to the user; in the terminal,logging in to the server; in the server, acquiring the device identifiercorresponding to the user identifier of the terminal that has logged inand transmitting the device identifier to the terminal that has loggedin; in the terminal, transmitting to the server the transmitted deviceidentifier and an instruction for the electronic device; and in theserver, transmitting the transmitted instruction to the electronicdevice corresponding to the transmitted device identifier.
 18. Thecommunication method according to claim 17, wherein the electronicdevice executes processing according to the instruction received fromthe server.
 19. The communication method according to claim 17, furthercomprising: in a communication device connected to the electronic deviceand configured to be able to communicate with the server, receiving aninstruction or a processing result from the server, and transmitting thereceived instruction or processing result to the electronic device. 20.The communication method according to claim 19, further comprising: inthe communication device, receiving an instruction from the electronicdevice and transmitting the received instruction to the server.